Mercurial > hg > truffle

comparison agent/src/share/classes/sun/jvm/hotspot/debugger/windbg/AddressDataSource.java @ 0:a61af66fc99e jdk7-b24

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initial load
author duke
date Sat, 01 Dec 2007 00:00:00 +0000
parents
children c18cbe5936b8
comparison
equal deleted inserted replaced
-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2002-2004 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 package sun.jvm.hotspot.debugger.windbg;
26
27 import java.io.*;
28 import sun.jvm.hotspot.debugger.*;
29 import sun.jvm.hotspot.debugger.win32.coff.*;
30
31 public class AddressDataSource implements DataSource {
32 public AddressDataSource(Address addr) {
33 this.addr = addr;
34 offset = 0;
35 }
36
37 public byte readByte() throws IOException {
38 try {
39 byte res = (byte) addr.getCIntegerAt(offset, 1, false);
40 ++offset;
41 return res;
42 } catch (UnmappedAddressException e) {
43 throw (IOException) new IOException("Unmapped address at 0x" + Long.toHexString(e.getAddress())).initCause(e);
44 } catch (DebuggerException e) {
45 throw (IOException) new IOException().initCause(e);
46 }
47 }
48
49 public short readShort() throws IOException {
50 // NOTE: byte swapping is taken care of at the COFFFileImpl level
51 int b1 = readByte() & 0xFF;
52 int b2 = readByte() & 0xFF;
53 return (short) ((b1 << 8) | b2);
54 }
55
56 public int readInt() throws IOException {
57 // NOTE: byte swapping is taken care of at the COFFFileImpl level
58 int b1 = ((int) readByte()) & 0xFF;
59 int b2 = ((int) readByte()) & 0xFF;
60 int b3 = ((int) readByte()) & 0xFF;
61 int b4 = ((int) readByte()) & 0xFF;
62 return ((b1 << 24) | (b2 << 16) | (b3 << 8) | b4);
63 }
64
65 public long readLong() throws IOException {
66 // NOTE: byte swapping is taken care of at the COFFFileImpl level
67 long b1 = ((long) readByte()) & 0xFFL;
68 long b2 = ((long) readByte()) & 0xFFL;
69 long b3 = ((long) readByte()) & 0xFFL;
70 long b4 = ((long) readByte()) & 0xFFL;
71 long b5 = ((long) readByte()) & 0xFFL;
72 long b6 = ((long) readByte()) & 0xFFL;
73 long b7 = ((long) readByte()) & 0xFFL;
74 long b8 = ((long) readByte()) & 0xFFL;
75 return (((((b1 << 24) | (b2 << 16) | (b3 << 8) | b4)) << 32) |
76 ((((b5 << 24) | (b6 << 16) | (b7 << 8) | b8))));
77 }
78
79 public int read(byte[] b) throws IOException {
80 for (int i = 0; i < b.length; i++) {
81 b[i] = readByte();
82 }
83 return b.length;
84 }
85
86 public void seek(long pos) throws IOException {
87 offset = pos;
88 }
89
90 public long getFilePointer() throws IOException {
91 return offset;
92 }
93
94 public void close() throws IOException {
95 }
96
97 private Address addr;
98 private long offset;
99 }